EFFICIENT UTILIZATION OF CHANNEL CAPACITY FOR SPEECH COMMUNICATION. Part 2
Abstract
This report describes a research investigation directed toward more efficient utilization of channel capacity for speech communication. This objective was pursued by a program (1) to theoretically analyze the benefits realized by 'predictive encoding' of vocoded speech sources, (2) to propose and analytically design a model of a typical processing system utilizing predictive coding, and (3) to evaluate the performance characteristics of such a system by simulation with vocoded speech samples on a digital computer. The results were significant in that a compres sion of 35 to 40 percent was obtained relative to the initial requirements for transmission of the spectrum portion of vocoded speech data. This magnitude of compression can be obtained for essentially real-time transmission and buffer storage requirements of the order of 100 bits. Compression factors greater than one-half are possible if a time delay in the speech transmission can be tolerated and if additional memory can be supplied.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1963
- Accession Number
- AD0418178
Entities
People
- A. R. Aitken
- D. R. Ziemer
- R. L. Brueck
Organizations
- Texas Instruments